Table 1 Characteristic of Infants
ROP type 1 | ROP type 2 | Low-grade | None | Excluded | |
|---|---|---|---|---|---|
Birthweight, g | |||||
mean (SD) | 637 (167) | 596 (145) | 799 (209) | 1134 (301) | 1588 (498) |
median | 705 | 540 | 720 | 1145 | 1490 |
gestational age, weeks | |||||
mean (SD) | 25.5 (0.8) | 25.1 (0.8) | 26.8 (2.0) | 28.9 (2.1) | 32.5 (2.6) |
median | 25.4 | 24.7 | 26.3 | 29 | 32.3 |
male, n (%) | 7 (50) | 4 (44.4) | 25 (53.2) | 136(53.9) | 186(53.0) |